CN101936460A - LED lamps - Google Patents

Abstract

A light-emitting diode (LED) lamp comprises a radiator with a baseplate, a plurality of heat conducting supports installed on the bottom surface of the baseplate of the radiator in a heat conduction manner and a plurality of LED modules installed on the heat conducting supports in a heat conduction manner, wherein the heat conducting supports ensure the light outgoing directions of the corresponding LED modules to incline towards the outside relative to the vertical direction and are arranged on the bottom surface of the baseplate of the radiator in a radial manner. Compared with the prior art, the LED lamp adopts the supports arranged on the bottom surface of the baseplate of the radiator to form the needed lighting area so as to achieve the corresponding lighting effect. When the supports enclose a radial light-emitting area, the LED modules arranged on the supports are correspondingly distributed around the light-emitting area, thus producing the light-emitting effect of large-angle lighting.

Description

LED lamps

technical field

The invention relates to a lighting device, in particular to a light emitting diode lamp.

Background technique

As a new third-generation light source, light-emitting diode (Light Emitting Diode, referred to as LED) light source, although it cannot replace the traditional incandescent lamp on a large scale, it has the advantages of long working life, energy saving, environmental protection, etc., and is generally accepted by the market. look good. Moreover, the current module composed of light-emitting diodes can produce high-power, high-brightness light sources, so it will widely and revolutionaryly replace existing light sources such as traditional incandescent lamps, and then become the main light source in line with the theme of energy conservation and environmental protection

However, with the increase of the power and brightness of the LED and its module, the heat generated by it is also increasing. Therefore, the LED module is usually installed on a flat radiator to ensure the normal operation of the LED module. Work. These light-emitting diode modules are generally placed horizontally on the bottom of the radiator to form a plane light source. When the light-emitting diode lamp equipped with a plane light source is installed on a light pole separately, the irradiation direction of the lamp will be single, and the radiation The area is also limited, making it difficult to satisfy users in many cases.

Contents of the invention

In view of this, it is necessary to provide a light-emitting diode lamp with a large light emitting angle.

A light-emitting diode lamp, comprising a heat sink with a base plate, a plurality of heat conduction brackets installed on the bottom surface of the base plate of the heat sink, and a number of light-emitting diode modules respectively heat conduction mounted on these heat conduction supports, and the heat conduction supports make corresponding The light-emitting direction of the light-emitting diode module is inclined outward relative to the vertical direction, and the brackets are arranged radially on the bottom surface of the heat sink substrate.

Compared with the prior art, the light-emitting diode lamp of the present invention forms a required lighting area by arranging a plurality of brackets arranged on the bottom surface of the substrate of the heat sink, and achieves corresponding lighting effects. When a plurality of brackets form a radial light-emitting area, the light-emitting diode modules arranged on the brackets are correspondingly distributed around the light-emitting area, thereby producing a large-angle lighting lighting effect.

The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a three-dimensional assembled view of an LED lamp according to an embodiment of the present invention.

FIG. 2 is an exploded view of components of the LED lamp in FIG. 1 .

Fig. 3 is an upside-down stereo combination view of the light-emitting diode lamp in Fig. 1 .

FIG. 4 is an exploded view of components of the LED lamp shown in FIG. 1 upside down.

FIG. 5 is an exploded view of the mounting part of the LED lamp in FIG. 3 .

Detailed ways

Please refer to FIG. 1 and FIG. 2 , the LED lamp according to one embodiment of the present invention includes a heat sink 10 , several brackets 20 fixed on the bottom surface of the radiator 10 , several LED modules 30 attached to the bracket 20 , A lampshade 40 covering the bracket 20 and the LED module 30 and sealingly combined with the heat sink 10 and a protective cover 50 sleeved on the outer periphery of the lampshade 40 are provided.

Please refer to Fig. 3 to Fig. 5 at the same time, the above-mentioned radiator 10 is made of a metal material with good thermal conductivity such as copper, aluminum, alloy, etc., and it includes a disc-shaped substrate 12 and extends upward from the top surface of the substrate 12. And some cooling fins 14 that go out. A ring-shaped protruding portion 120 protrudes vertically downward along the bottom periphery of the base plate 12 . The annular protruding portion 120 defines an accommodating portion 121 for the bracket 20 to be accommodated therein. A central portion of the protruding portion 120 is inwardly recessed to form an annular receiving groove 122 . An annular sealing rubber ring 100 is accommodated in the accommodating groove 122 for sealing the LED lamp. A vertical through hole 124 is defined in the center of the substrate 12 for the power supply line to pass through and electrically connect to the LED module 30 . A plurality of vertical ribs 126 protrude from the outer periphery of the base plate 12 uniformly and at intervals. A screw hole 1260 is defined in the center of the bottom surface of the protruding ribs 126 for cooperating with screws (not shown) to install the lampshade 40 . A cylindrical connecting portion 16 protrudes vertically upward from the center of the top surface of the base plate 12 . The connecting portion 16 is disposed around the through hole 124 . The heat dissipation fins 14 vertically extend upward from the top surface of the base plate 12 , and airflow channels (not shown) for air flow to pass through are formed between adjacent heat dissipation fins 14 . The cooling fins 14 are arranged radially around the connecting portion 16 . An annular groove 160 is defined on the top surface of the connecting portion 16 , and an annular sealing gasket 200 is accommodated in the groove 160 for sealing the LED lamp. A bowl-shaped hollow mounting part 17 is placed on the top surface of the connecting part 16 corresponding to the sealing cover, so that the mounting part 17 communicates with the inside of the connecting part 16, and jointly forms an accommodating cavity (not marked), with The containing drive circuit module (not shown in the figure) provides power drive for the LED lamps. A receiving hole 170 is defined on a side wall of the mounting member 17 . The mounting member 17 is formed with an internal thread at the receiving hole 170 . A safety connector 18 is passed through the accommodating hole 170 to connect the exterior and interior of the lamp and allow the wires to pass through. The safety connector 18 is provided with a through hole 180 passing through its central axis. A concave groove 182 is defined in the middle of the safety connector 18 . The outer circumference of the safety connector 18 near the bottom is provided with an external thread for matching with the inner thread at the receiving hole 170 , so that the safety connector 18 is screw-tightly fixed on the mounting member 17 . The safety connector 18 also includes a pressing piece 184 with a middle part in the shape of an arch bridge and installed in the concave groove 182 . Positioning holes (not shown) are defined at both ends of the pressing piece 184 for screws to pass through to fix the pressing piece 184 on the inner sidewall of the recessed groove 182 . The pressing sheet 184 is used to position the electric wires passing through the safety connector 18 to prevent the electric wires from being displaced due to pulling by external force. A mounting piece 300 is mounted on the top surface of the mounting part 17 for fixing the LED lamp at a specific position.

The bracket 20 is integrally made of a metal material with good thermal conductivity, such as copper, aluminum, alloy, etc. Preferably, the bracket 20 is made by extrusion. Each bracket 20 includes a joint part 22 fixed on the bottom surface of the substrate 12, a mounting part 24 arranged at a distance from the joint part 22 and for the LED module 30 to be attached to and connected to the joint part 22 And some connection plates 26 of the installation part 24. The connecting portion 22 is a rectangular plate, which is horizontally attached to the bottom surface of the substrate 12 and accommodated in the accommodating portion 121 . These joint portions 22 surround the through hole 124 at the center of the substrate 12 and are arranged radially with respect to the through hole 124 . The installation part 24 is a rectangular plate, which forms an acute angle (not marked) with the joint part 22, so that the LED module 30 attached to the outer surface of the installation part 24 is relatively opposite to the radiator. The base plate 12 on the base plate 10 is inclined downward at a certain angle along the periphery of the base plate 12 to the center thereof, so as to increase the irradiation range of the LED module 30 . In other embodiments, the installation part 24 and the joint part 22 can be set to incline at different angles according to the needs of different illumination angles of the LED lamps, as long as the bracket 20 can make the LED module installed thereon The light emitting direction of the group 30 may be inclined outward relative to the vertical direction. The connecting plate 26 extends vertically downward from the bottom surface of the connecting portion 22 and is correspondingly connected to the inner surface of the mounting portion 24 . The connecting plates 26 are arranged parallel to each other and spaced apart. In this embodiment, the mounting portion 24 of the bracket 20 forms an inverted cone relative to the substrate 12 , and the LED modules 30 are correspondingly distributed on the periphery of the inverted cone. It can be understood that, according to the requirement of light extraction, the installation part 24 of the bracket 20 can be surrounded by a corresponding regular or irregular shape relative to the base plate 12 .

Each LED module 30 includes a rectangular circuit board 32 , a plurality of LEDs 34 evenly mounted on the circuit board 32 , and a plurality of optical lenses 36 correspondingly covered on the LEDs 34 . The circuit board 32 of each LED module 30 is adhered to the outer surface of the mounting portion 24 of a bracket 20 corresponding to thermal conductivity. The optical lens 36 is used to change the light emitting direction of the LED 34, so that the LED lamp of the present invention can obtain a better lighting effect.

The above-mentioned lampshade 40 is bowl-shaped and made of transparent or translucent materials such as glass, resin, plastic, etc., and covers the bottom surface of the substrate 12 correspondingly. A top edge of the lampshade 40 extends horizontally outward to form an annular clip 42 . The shape of the card edge 42 corresponds to the accommodating groove 122 of the substrate 12 , so as to be correspondingly accommodated in the accommodating groove 122 . The sealing rubber ring 100 is sandwiched between the card edge 42 and the bottom surface of the substrate 12, and is made of an elastic sealing material such as silica gel to seal the gap between the lampshade 40 and the radiator 10, thereby strengthening The overall sealing of the light-emitting diode lamps. The LED lamp is further provided with a pressing frame 60 for fixing the lampshade 40 on the base plate 12 . The pressure frame 60 is generally a circular frame with a circular opening 62 formed in its center. The size of the pressing frame 60 is slightly larger than the clamping edge 42 of the lampshade 40, so that when assembled, the lampshade 40 can mostly pass through the opening 62 of the pressing frame 60, and at the same time, the pressing frame 60 can be clamped in place. On the card edge 42 of the lampshade 40 . A plurality of semicircular projections 64 protrude outwards at regular intervals from the outer periphery of the pressure frame 60 . These bumps 64 correspond to the ribs 126 of the base plate 12 in position, and the bumps 64 are correspondingly overlapped with the ribs 126 during assembly. A mounting hole 640 is defined in the middle of each protrusion 64 for a screw (not shown) to pass through and be screwed into the screw hole 1260 of the rib 126, so that the card edge 42 of the lampshade 40 passes through the screw hole 1260. The pressure frame 60 is clamped and fixed in the accommodating groove 122 of the base plate 12 . A plurality of fixing holes 620 are spaced apart on the pressure frame 60 close to the opening 62 for fixing the protective cover 50 .

The protective cover 50 has a bowl-shaped shape, which is made of bent and braided metal wires. The protective cover 50 corresponds to the lampshade 40 in shape, and is slightly larger than the lampshade 40 in size, so that the protective cover 50 is conveniently placed on the outer periphery of the lampshade 40 to protect the lampshade 40 from being directly impacted by external force. A ring 52 extends horizontally outward from the top edge of the protective cover 50 , and a plurality of through holes 52 are formed on the ring 52 at intervals. Several screws pass through the holes 52 and are screwed into the fixing holes 620 of the pressure frame 60 , so as to fix the protective cover 50 on the pressure frame 60 .

Please refer to FIG. 1 to FIG. 5 again. When assembling the light-emitting diode lamp of the present invention, the bracket 20 is fixed on the bottom surface of the substrate 12 by screws, and the light-emitting diode module 30 is correspondingly attached to the bracket 20. On the installation part 24 of the lampshade 40, the pressure frame 60 fixes the lampshade 40 on the bottom surface of the substrate 12, the bracket 20 and the LED module 30 are placed in the lampshade 40 together, and the protective cover 50 is fixed on the The pressure frame 60 is sleeved on the outer periphery of the lampshade 40 .

Compared with the prior art, the LED lamp of the present invention forms a required lighting area by arranging a plurality of brackets 20 arranged on the bottom surface of the substrate 12 of the heat sink 10 to achieve a corresponding lighting effect. When a plurality of brackets 20 form an inverted cone light-emitting area, the LED modules 30 arranged on the outer surface of the mounting part 24 of the bracket 20 are correspondingly distributed around the inverted cone area, thereby producing a large-angle lighting effect . In addition, the light-emitting diode lamp of the present invention transmits the heat generated by the light-emitting diode module 30 to the substrate 12 through the bracket 20 during operation, and then transfers it to the heat dissipation fins 14 to dissipate it. The entire heat dissipation process is not only carried out inside the lamp, but also outside the lamp In this way, the heat dissipation efficiency of the light-emitting diode lamp of the present invention is higher, and the lamp can be guaranteed to work at a lower temperature. At the same time, each structural gap of the light-emitting diode lamp of the present invention is provided with a sealing structure, which is suitable for use as a lighting device in various flammable and explosive workplaces such as petroleum, chemical industry, shipbuilding, smelting, and mining.

Claims (15)

1. A light-emitting diode lamp, characterized in that: it comprises a heat sink with a base plate, some heat-conducting brackets installed on the bottom surface of the base plate of the radiator, and some light-emitting diode modules respectively heat-conducted and installed on these heat-conducting supports, The heat-conducting brackets make the light emitting directions of the corresponding LED modules tilt outward relative to the vertical direction, and these brackets are arranged radially on the bottom surface of the heat sink substrate. 2. The light-emitting diode lamp according to claim 1, wherein each bracket includes a joint portion fixed on the bottom surface of the substrate and extends obliquely from the joint portion for the LED module to be placed on. an installation department. 3 . The light emitting diode lamp according to claim 2 , wherein the mounting portion is inclined inwardly at a certain angle relative to the base plate along the periphery of the base plate. 4 . 4. The light emitting diode lamp according to claim 2, wherein an acute angle is formed between the installation part and the joint part. 5 . The light emitting diode lamp according to claim 2 , wherein the bracket further comprises a plurality of connecting plates arranged at intervals to connect the installation part and the joint part. 6 . 6. The light-emitting diode lamp according to claim 1, wherein the brackets have the same structure and are integrally formed by extrusion. 7. The light-emitting diode lamp according to claim 1, characterized in that: a hollow mounting part is added to the heat sink, and a cylindrical connecting part protrudes upward from the top surface of the substrate, and the mounting part seals The permanent cover is placed on the connecting part, and the mounting part communicates with the inside of the connecting part and jointly forms an accommodating cavity. 8. The light-emitting diode lamp according to claim 7, wherein a housing hole is opened on the mounting part, and a safety connector is inserted into the housing hole to connect the LED module and the light-emitting diode module. The wires of the external power supply pass through the safety connector into the accommodating cavity. 9. The light-emitting diode lamp according to claim 8, characterized in that: the part of the safety connector located outside the installation part has a recessed groove, and an arched pressing piece fixes the wire passing through the safety connector. on the inside wall of the recessed groove. 10 . The light emitting diode lamp according to claim 1 , wherein a plurality of cooling fins extend upward from the top surface of the base plate, and an air flow channel for air flow is formed between adjacent cooling fins. 11 . 11. The light-emitting diode lamp according to claim 10, wherein the cooling fins are arranged radially relative to the center of the substrate. 12. The light-emitting diode lamp according to claim 1, wherein a ring-shaped protrusion protrudes downward from the bottom surface of the substrate, and the ring-shaped protrusion is arranged around the bracket, and the protrusion The middle part of the bottom surface is inwardly recessed to form an annular accommodating groove. 13. The light-emitting diode lamp according to claim 12, further comprising a lampshade covering the bracket and the LED module and sealingly combined with the heat sink, the top edge of the lampshade facing outwards A ring edge extends horizontally, and the ring edge is accommodated in the accommodating groove. 14. The light-emitting diode lamp according to claim 13, further comprising a ring-shaped pressure frame for fixing the lampshade to the substrate, and the ring edge of the lampshade is sealed and clamped between the pressure frame and the substrate between. 15 . The light emitting diode lamp according to claim 13 , further comprising a set of protective cover arranged on the outer periphery of the lampshade, and the protective cover is made of bent and braided metal wires. 15 .

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